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Yuki888 [10]
3 years ago
15

Dr. ilvento uses a smart phone app to track the distance he walks. while taking the same walk each time, he noticed the distance

stated in the app varied a lot. so he began to record the distance in an experiment. he also recorded the distance in a car and found it to be consistently 2.4 miles. the data and some summary information are given below. assume this comes from a normal distribution. this is a small sample mean problem.
Mathematics
1 answer:
-BARSIC- [3]3 years ago
3 0
Need help dont get it prob get a calculator

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Help!!! The one marked red is wrong
kakasveta [241]

Answer:

4x+5

Step-by-step explanation:

5 0
3 years ago
7(3x + 5y)<br> Simplify this expression please!
lbvjy [14]

Answer:

21x + 35y

Step-by-step explanation:

Distribute the 7 to everything in the parentheses.

7*3=21

7*5=35

5 0
3 years ago
Read 2 more answers
A ladder is placed 30 inches from a wall. It touches the wall at a height of 50 inches from the ground.
kati45 [8]
I don't know if you need the answer to how long the ladder is or what degree the ladder and ground form so I am going to give you both.

The ladder is 58.31 inches
The degree is 59.04

If you have any question let me know 
7 0
3 years ago
Read 2 more answers
Rick cuts a 12-foot-long ribbon into 2 pieces. One piece is 3.5 feet longer than the other. What is the length of each piece?
GREYUIT [131]

Its impossible there is no way to solve it because x+3.5= y no number can make 12 if one number is 3.5 ft longer than the other Ignore this i dont feel like erasing this part.

144 in. 42 in. greater than the other 42 + x = y Nvm if you convert the numbers too in. the numbers are 93 + 51 = 144 and if you convert it back it would be

7.75 + 4.25 = 12

3 0
2 years ago
What are 3 input and output values for the equation y=-x^2+4?
pogonyaev
Here, The function:  y = -x² + 4
Input values would be x coordinates & output values would be y.

When, x = 1, y = (-1)² + 4 = 1 + 4 = 5
x = 2, y = (-2)² + 4 = 4 + 4 = 8
x = 3, y = (-3)² + 4 = 9 + 4 = 13

In short, Your Three input values are: 1, 2, 3
Three Output values are: 5, 8, 13

Hope this helps!
4 0
3 years ago
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